Apparatus for severing and overlapping material web sections, especially for a packaging machine for tobacco products
AssigneeMolins Limited
InventorErnst Schneeberger
Life of this patent
Estimating the term…
Abstract
An apparatus for severing sections of a material web and for overlapping in each case two such sections, especially for a packaging machine for tobacco products, in particular products which can be smoked, comprising a supply roll, a withdrawal device for the material web, a cutter device and a conveyor device for the sections. Between the cutter device and the conveyor device there is arranged a holder device which is coupled with a control device. The holder device is arranged in such a manner that it fixedly holds a cut section which is to be overlapped until the continuously further traveling material web end has advanced over the fixedly held section by an amount corresponding to the overlapping width.
Claims18
Apparatus for severing sections of a material web and for overlapping the severed sections in pairs, especially for a packaging machine for the packaging of products which can be smoked, comprising a supply roll for supplying a material web, a withdrawal device for withdrawing the material web from the supply roll, a cutter device for cutting sections from the material web, a conveyor device for conveying the cut sections, a holder device comprising a suction nozzle arranged between the cutter device and the conveyor device adjacent the plane of travel of the material web, a control device comprising a pneumatic valve for operating the holder device by control of the application of suction through said nozzle such that said holder device fixedly holds a cut section for overlapping the same until the material web which continuously moves has displaced over the fixedly held cut section by an amount corresponding to a predetermined overlapping width, said pneumatic valve including means to vent said suction nozzle to atmosphere after fixedly holding said cut portion to precisely control said overlapping width.
An apparatus for severing sections of a material web and for overlapping in each case two such sections, especially for a packaging machine for the packaging of products which can be smoked, comprising supply means for continuously supplying a material web, withdrawal means for withdrawing the material web from the supply means, cutter means for cutting sections from the material web, conveyor means for conveying the cut sections, pneumatic suction holder means arranged between the cutter means and the conveyor means, and control means for controlling the application of suction to said holder means, said holder means being adapted to fixedly hold a cut web section for overlapping the same with the material web until the continuously moving web has been displaced over the fixedly held cut section by an amount essentially corresponding to a predetermined overlapping width, said control means including means to vent said pneumatic suction holder to atmosphere after fixedly holding said cut portion to precisely control said overlapping width.
Dependencies are inferred from the claim text.